Add missing useful String extension method to Pharo String class.
Install StringExtensions from Command-Line Interface using Pharo Install:
pi install StringExtensionsEpMonitor disableDuring: [
Metacello new
baseline: 'StringExtensions';
repository: 'github://hernanmd/StringExtensions/repository';
load ].If you want to add it to your Metacello Baseline, copy and paste the following expression:
" ... "
baseline: 'StringExtensions'
with: [ spec repository: 'github://hernanmd/StringExtensions/repository' ].
" ... "To quickly find methods provided by this package, please evaluate:
(String methods select: #isExtension) select: [ : p | p package name = 'StringExtensions' ]| Method | Purpose |
|---|---|
| asCondensedString | Return a copy of the receiver with leading/trailing blanks removed and white spaces condensed |
| asFloat | Answer a that represents the value of the receiver |
| beginsWith:or: | Answer if receiver's begins with firstPrefix or secondPrefix |
| copyUpToAny: | Answer a discarding all elements in the receiver which appear after any of of the elements in aCollection |
| copyUpToStartParenthesis | Answer the receiver without preserving all Character's up to the first opening parenthesis |
| findNumbers | Answer a of numbers, removing other characters |
| hammingDistanceTo: | Answer a respresenting the minimum amount of substitutions to convert the receiver into aString |
| includesBeginWith: | Answer whether aString begins like one of the receiver's sub strings elements |
| includesEndsWith: | Answer whether aString ends like one of the receiver's sub strings elements |
| indexesOfMotif: | Answer a of indexes of a motif in a string |
| indicesOfCharacter: | Given aCharacter contained in the receiver, answer a of positions where the aCharacter is found |
| indicesOfSubstring: | Given aCharacter contained in the receiver, answer a of positions where the aCharacter is found |
| indicesOfSubstring:mismatches: | Answer a of start positions where subString is found allowing at most d mismatches |
| indicesOfSubstringOverlaps: | Given aCharacter contained in the receiver, answer a of positions where the aCharacter is found |
| isAllBlanks | Answer whether the receiver is composed entirely of space separators |
| isAllLetters | Answer whether the receiver is composed entirely of letters |
| isNumeric | Answer whether the receiver is a Number |
| isXML | Only answer when the receiver's contents looks like XML, not performing any validity check |
| isZipped | Answer if receiver conforms to GZIP file format |
| levenshteinDistanceTo: | Iterative calculation of the Levenshtein distance between two strings |
| lowercaseFirstLetter | Answer a String made up from the receiver whose first character is lowercase |
| shingle: | Answer an with contiguous sequences (shingles) of n characters |
| shingleMax: | Answer an maximally shingled with contiguous sequences (shingles) of n characters |
| shingleWords: | Word shingling |
| withoutBlanks | Return a copy of the receiver with leading/trailing blanks removed and white spaces condensed |
| withoutCRs | Answer the receiver without carriage returns |
| withoutNumbers | Return a copy of the receiver with numbers removed |
Extracting numbers in Strings is easily supported in Pharo:
'Hola123Mundo' asInteger. "123"However, consider the following:
'Hola123Mundo234' asInteger. "123"If we want to extract all numbers in the received String, then we could use #findNumbers:
'Hola123Mundo234' "an OrderedCollection('123' '234')"- On empty String, answer an empty Collection
- Negative Integers are extracted with sign:
'Hola-10' findNumbers. "an OrderedCollection('-10')" - Floats are not supported:
'Hola30.6' findNumbers. "an OrderedCollection('30' '6')"
Return a copy of the receiver with leading/trailing blanks removed and white spaces condensed.
Reject all digits from the received String. Examples:
'3333' withoutNumbers = ''.
'aaaa' withoutNumbers = 'aaaa'.
'aaa1234' withoutNumbers = 'aaa'.
'' withoutNumbers = ''Return a copy of the receiver with leading/trailing blanks removed and white spaces condensed.
Return a copy of the receiver without carriage returns.
Answer whether the parameter String begins like one of the receiver's sub strings elements. For example, the following expressions evaluate all to true:
'Rose is a rose of splendor' includesBeginWith: 'rose'.
'Rose is a rose of splendor' includesBeginWith: 'ROSE'.
'Raise the art to resistance' includesBeginWith: 'resist'.
'Danger dare to be grand' includesBeginWith: 'dar'.Answer true whether the receiver is composed entirely of letters.
Answer whether the receiver is a Number. It uses a regular expression.
Cheap checking of beggining XML document, no parsing involved, just check '<?xml'.
Uses GZipConstants gzipMagic to check if the received String conforms to GZip file format.
This software is licensed under the MIT License.
Copyright Hernán Morales, 2018-2022
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.